Based on the information shown in the exhibit, which of the following is the time interval used by the SGW to send out an "Echo Request" message over the GTP interface?

During a UE detach procedure, which commands are exchanged over the S5 interface?
Which of the following statements is FALSE regarding the X2 interface?
Based on the information shown in the exhibit, what is the TEID value 0x37 used for?

On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the TEID-U values assigned to an EPS bearer for a particular UE?